45621542 has 4 divisors (see below), whose sum is σ = 68432316. Its totient is φ = 22810770.

The previous prime is 45621539. The next prime is 45621617. The reversal of 45621542 is 24512654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24512654 = 2 ⋅12256327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11405384 + ... + 11405387.

It is an arithmetic number, because the mean of its divisors is an integer number (17108079).

Almost surely, 2^45621542 is an apocalyptic number.

45621542 is a deficient number, since it is larger than the sum of its proper divisors (22810774).

45621542 is a wasteful number, since it uses less digits than its factorization.

45621542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22810773.

The product of its digits is 9600, while the sum is 29.

The square root of 45621542 is about 6754.3720655587. The cubic root of 45621542 is about 357.3194471922.

The spelling of 45621542 in words is "forty-five million, six hundred twenty-one thousand, five hundred forty-two".